| Red River Lumber Co., Round Mountain, CA |
1167 |
| Roaring Camp & Big Trees Narrow Gauge Railroad No. 5, Felton, CA |
1692 |
| Roots of Motive Power No. 4, Willits, CA |
1621 |
| Rudulph, Bert, Willits, CA |
1621 |
| San Joaquin & Eastern Railroad No. 105, Auberry, CA |
1441 |
| San Joaquin & Eastern Railroad No. 106, Auberry, CA |
1445 |
| San Joaquin & Eastern Railroad No. 107, Auberry, CA |
1583 |
| San Joaquin & Eastern Railroad No. 108, Auberry, CA |
1537 |
| San Joaquin & Eastern Railroad No. 109, Auberry, CA |
1627 |
| San Joaquin & Eastern Railroad No. 110, Auberry, CA |
1636 |
| Sierra Lumber Co. No. 260, Red Bluff, CA |
260 |
| Sierra Railway of California No. 21, Jamestown, CA |
746 |
| Sierra Railway of California No. 22, Jamestown, CA |
812 |
| Stone & Webster Construction co, Butt Valley Dam, CA |
195 |
| Sugar Pine Railway No. 1 FIDO, Standard, CA |
746 |
| Swayne Lumber Co., Oroville, CA |
X232 |
| Warren Creek Railroad No. 1, Warren Creek, CA |
966 |
| Yosemite Lumber Co. No. 4 (1st), Merced, CA |
1535 |
